Push-button latch



April 28, 1653 J. CHAPETA Erm. 2,636,763

PUSH-BUTTON LATCH Filed July l, 1949 2 Sl'iEETS-Sl-EET 1 @f MMZWW April 28, 1953 J. CHAPETA Erm., 2,636,763

PUSH-BUTTON LATCH Filed July l, 1949 2 SHEETS-SHEET 2 Patented Apr. 28,vv 1953 PUSH-BUTTON `LATCH Juan Chapeta and Francisco Vigna,

Cordoba, Argentina Application July 1, 1949, Serial No. 102,540

In Argentina July 417, 19118` i claims- (ci. 2oz- 166) The present invention concerns a new type of lock and key to be used in general on all doors. Its design and use is very simple, as it operates just by pressing a button, thus doing away with turning handles and their cooperating parts.

To this effect, the lock has a simple mechanism that converts the straight movement of the button into another movement in line with the latch, in a 90 angle with respect to the former.

The principle of the invention consists of a well guided button which has a rod that rests on a small articulated angle which in turn operates one of the ends of a lever, while on its other end there is a connection with the latch, in such a manner that by pressing the button, the latch operates to thereby allow the door to open. There are a few complementary parts to the mechanism which will be noted as the description of the invention proceeds.

In order that this invention may be better understood in such a manner as to enable it to be easily put to practice, it has been represented in several illustrative iigures in which:

Fig. 1 shows the interior mechanism of the latch, as seen from the front.

Fig. 2 is a sectional view taken on line I--I of Fig. 1.

Fig. 3 is another sectional view taken on line 2-2 of Fig. 1, showing the mechanism while it is inoperative.

Fig. 4 is a view similar to Fig. 3, but with the mechanism in operative position.

Fig. 5 is a sectional view taken on line 3-3 of Fig. 4.

In Fig. 6 may be seen in two views, in detail, the articulated angle that joins the rod of the button with the lever of the latch to transmit the operating movement.

In the cliierent iigures the same numbers are used for identical parts.

The construction, according to the embodiment illustrated, consists of the casing Iy of a convenient size to be installed flush with the door. This casing I, has screws at each side and two rigid handles 3, one on each side, so that the door may be opened from either side. Evidently, if the casing I is flush with the door a (a part of which may be seen in Figs. 1 and 3) the screws 2 should be long enough to reach casing I, and will also be ilush with the respective handles 3.

Between the two above mentioned elements (handle 3 and casing I) there is a spacer bushing 4, of the same thickness as the door a between the handle 3 and the casing I, placed in such a way that it is pressed by the screws 2 when the latch is installed, and in this manner handle 3 is fixed on its corresponding side of the door a.

Handle 3 has a hole 5 in which is mounted the spring 6 and the button 1.

The button 'I is not quite iiush with the outer handle surface, as may be seen in Fig. 3.

Furthermore, button 'I has a rod 8 which, after passing through bushing 4 and hole ii of casing I, enters'the latter for operation with a mechanism, as shall be more apparent later on. The free end of the rod 8 is rounded on one of its sides, as indicated in 8a.

Within casing I there is mounted on two small bases I() the articulated angle piece I I which has, for this purpose, two axle ends I2 (Figs. 1, 5 and 6) which rest on these two bases in such a manner that an oscillating movement or a r0- tative movement is achieved, and the wings must coincide with holes 9, and therefore with the ends 8a as well, of the rods 8 of each button 1. The coincidence of these two wings with the angle piece II and the ends 8a should be such that as veither rod 8 slides, the angle piece I I may be r0- tated proportionately, that is, it should rotate a fraction of a turn in relation to the rectilinear movement of rod 8.

A third wing II has almost the same inclination as one of the other two wings, coincides with the end I3 of the lever I4 (Figs. 1 and 5). This lever I4 which is curved, rotates around axle I5 which joins casing I, and its other end I E rests in the groove I1 of latch I8.

A pin or bolt I9 acts as a guide for the latch, as it is fixed to casing I and ts freely in the longitudinal groove 2B of latch I8 thereby per` mitting a sliding movement. The spring 2l acts on latch I8 with a tendency to keep said latch I8 projected.

When the latch is operated by pressing either one of the buttons l, the following operation takes place (Figs. 4 and 5): rod S slides in far enough to scrape end 8a with the corresponding wing of angle piece I I, causing it to rotate a fraction of a turn, since it is mounted on the ends of axles I2 on bases IU. The rotation of this :angle piece I I gives an angular movement to lever I4 as it is in contact with its wing II and its end I3; in this manner the movement is transmitted to the latch I8 upon contact with the other end IE so that the latch I8 slides in such a way to permit the door to open.

Upon releasing button 1, it will return to its normal or initial position by the action of spring E.

If the door should slam shut, or if it should 3 shut without having pushed either of thebuttons 7, the latch I8 will operate by itself, sliding automatically into its corresponding position after making its contacts just an instant before the door closes, as can be easily seen, since it has a free sliding movement by this effect, and its .provided with at least two apertures, a latch bolt slidable in said casing, spring means normally projecting said latch bolt through one or Said apertures, an angle piece provided with a plurality of wings, said angle piece being mounted for oscillating movement .in said casing, a lever having two ends, a pivot intermediate said ends and swingably supporting said lever 4in said casing, one end of said lever operatively engaging said latch bolt, a rod extending into the other of said `apertures and into the path of one of said wings of said angle piece, and manual means associated with said rod and adapted to slidably operate said rod in said casing, whereby when said rod engages the .said one of the wings ci said angle piece another of said wings abuts :against the other end of said lever to thereby 'retract `said latch bolt.

2. A latch according to claim l, wherein :said rod is normally spring biased and out of engagement with said one wing of said angle piece, said rod having two ends, one of said rod ends being provided with a rounded surface for engagement with said lever, said manual means for operating said rod being connected to the other end of said rod.

13, A, latch according to claim 1, wherein the wings oi' said angle piece are angularly -positioned with respect to each other.

ei. In a push button latch; a casing provided With an opening and two apertures, a latch bolt slidable in said casing, spring means normally projecting said latch bolt through said casing opening, an angle piece provided with a plurality of wingapivot means mounting said angle piece for oscillating movement in said casing, a lever arranged for pivotal movement in said casing and having two ends, one end of said lever operatively engaging said latch bolt, rod means, respectively, extending into each aperture of said casing, each rod means being disposed in alignment with a corresponding wing of said angle piece, and manually operable means on each of said rod means for slidably operating its respective rod means in Vsaid casing, whereby when either ci said rod means engages its corresponding wing or said angle vpiece another of said wings o1" said angle piece engages the other end of said lever to actuate said latch bolt and to retract it.

JUAN 'CHAPETA FRANCISCO VIGNA.

Liteferences Cited in the iile of this patent UNITED `S'lATES PATENTS Number Name Date 224,94() Prouty .K,-, Feb, 3.. 13.39 644,255 Meyer -..,Memm-f Feb, 27 1900 v 2,532,399 Fernandez a Dec. 5, 1950 

